👋 Hi, I’m Jhon Marmolejo

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👨‍💻 About Me

Technical Lead / Senior .NET Engineer

Email: [email protected]

Software engineer with 15+ years of experience developing and analyzing complex business applications, and 6+ years leading teams and designing application architectures. Experienced in managing multicultural teams across Germany, India, Sweden, USA, and Spain.

• 🧑‍🎓 Passionate mentor & code reviewer
• 🤝 Product owner alignment & architecture leadership
• 🚀 Proactive in risk identification & product improvement

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🛠️ Skills

Backend: .NET 6, .NET 8, .NET Core 2.0–3.1, .NET Standard 2.0–2.1, .NET Framework 4.5–4.7, Node.js (medium), TypeScript (medium), Spring Boot (low)
Frontend: HTML5, CSS3, JS, React (medium), Vue (medium)
Cloud & DevOps: Azure, AWS, Docker, Kubernetes, Terraform, Helm
Databases: SQL Server, PostgreSQL, Redis, DynamoDB
Messaging & Background Jobs: RabbitMQ, SNS, SQS, Hangfire
Monitoring & Logging: Datadog, New Relic, Grafana, Elasticsearch, Kibana
Methodologies & Principles: Scrum, Kanban, Lean, SOLID, KISS, DRY, YAGNI, Design Patterns, DDD, TDD, Clean Code, Clean Architecture
Testing: NUnit, Moq, NSubstitute, FluentAssertion, Selenium

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💼 Work Experience

Cint (11/2021 – Present) — Technical Lead

• Lead architecture discussions with architects and principals, ensuring scalable and maintainable solutions.
• Mentor developers, review PRs, and enforce high-quality code standards.
• Coordinate with product owners to deliver features aligned with business goals.
• Foster collaboration, continuous feedback, and team engagement to meet company objectives.
• Proactively identify risks and opportunities, improving product quality and performance.

_{Technologies: .NET 4.7.2, .NET Core 3.1, .NET 6 & 8, SQL Server, PostgreSQL, Redis, RabbitMQ, SNS, SQS, Azure, AWS, Docker, Kubernetes, Terraform, Helm, Hangfire, New Relic, Kibana, Grafana, React}

Adevinta (08/2019 – 11/2021) — Senior .NET Engineer / Technical Lead (Habitaclia)

• Designed and led architecture for Habitaclia portal, becoming Spain’s leading real estate platform.
• Mentored developers and conducted technical discussions to enhance scalability.
• Collaborated with product owners to align feature delivery with business strategy.

_{Technologies: .NET 4.7.2, .NET Standard 2.1, .NET Core 3.1, Node.js, TypeScript, SQL Server, Kafka, AWS, Docker, Kubernetes, React}

Fenergo (06/2018 – 08/2019) — Senior .NET Software Engineer

• Developed extensions to Client Lifecycle Management platform, ensuring regulatory compliance (AML, KYC, FATCA, Dodd-Frank, MiFID II, EMIR).

_{Technologies: .NET 4.7.2, .NET Core, ASP.NET WebAPI 2, WCF, SQL Server, Oracle, Elasticsearch, Logstash, TFS, Git, Azure}

RIA (08/2016 – 06/2018) — Senior .NET Software Engineer

• Developed and optimized money transfer applications across 100+ countries, coordinating with teams in USA and Malaysia.

_{Technologies: .NET 4.7, .NET Core, MVC 5, AngularJS/Angular 4, SQL Server 2016, Azure, Git, TFS}

NEC (03/2015 – 08/2016) — .NET Software Engineer / Tech Lead

• Coordinated development team, approved PRs, designed architectures, and optimized system processes.

Toyota (10/2012 – 07/2014) — .NET Consultant / Team Lead

• Led architecture design and software development for TesCar web application.

IECISA (01/2011 – 10/2012) — Technical Analyst / Team Lead

• Distributed tasks, designed prototypes, implemented architecture, and led projects for INECO and ClickSeguros.

Softbrilliance (02/2006 – 03/2009) — Senior Software Engineer / Tech Lead

• Managed 4–6 developers, implemented ERP web systems, and ensured technology updates.

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🎓 Education & Training

• Software Engineering – National University of Callao, Peru
• Control Direction Management – Gesfor Osmos, Spain
• Computer Technician – ISEL, Peru
• Networks Course – ISEL, Peru
• Specialist in Distributed Applications & Visual Programming – Computronic, Peru

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🌍 Languages

• Spanish – Native
• English – Fluent
• Italian – Intermediate

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📢 Publications & Blogs

• YouTube Channel
• Dev.to

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